Clutch-tripping device.



LEONARD AARON IPI-IELPS, 0F PEORIA, ILLINOIS, ASSIGNOR TO AVERY COMPNY,0F PEORIA, ILLINOIS, A CORPORATION 0F ILLINOIS.

CLUTCH-TRIPPING DEVICE.

Application filed January 6, 1915.

To all whom t may concern:

Be it known that l, LEONARD A. PrinLPs, a citizen of the United States,residing at Peoria, in the county of Peoria and State of Illinois, haveinvented certain new and useful Improvements in Clutch-Tripping Devices,of which the following is a specication, reference being had therein tothe invention serves to prevent such accidental dropping of the hammerby providing a foot edal and a manually operated lock for the foot pedalmaking it necessary to use both feet to release the clutch trippingpedal, thereby limiting the possibilities of the accidental dropping ofthe hammer.

For details of construction of this invention reference may be had tothe following drawings, in which:

Figure 1 is a side elevation of a trip haminer showing the improvedclutch tripping device.

F ig. 2 is a sectional view on the line 2--2 of Fig. 1.

Fig. 3 is an enlarged view of the clutch tripping device, and

Fig. 4 is a sectional view on thc line 4-4 of Fig. 3.

A conventional trip hammer is shown in the drawings, the base beingindicated by the numeral 1, the hammer by the numeral 2 and the sidehammer supports and guides Iby the numeral 3. A clutch is showndisengaged at which may be of any -well known type. 6 and 7 represent,.respectively the drive belt and power receiving'shaft, and when the twoparts of the clutch 5 are engaged, it will be seen that power istransmitted through the shaft 8 and the gears 9 to the shaft 10, causingthe same to rotate, and thereby raise and lower the hammer through theresultant revolution of the crank member 11. n

At the base of the hammer, pivoted at 12,.

Specification of Letters Patent. t

Patented Dec.. 4, l91't.

Serial No. 831.

there is the foot pedal 13, which is held locked in position by thetoothed segment on the lever or bell crank 14. This bell crank ispreferably in a box or casing 15 below the surface of the floor, and ispivotally supported at 16 upon the brackets 17, 17 on either side of thebell crank. At the other end of the bell crank there is provided thevertical guides 18, 18 these serving to prevent any lateral movement ofthe bell crank. The foot pedal 19, which extends a little above the ioorof the shop is in contact, at its lower end with the bell crank 14 andserves as a means, by pressing down upon it, to disengage the toothedsegment from the pedal 13. The spring 20 serves to restore the footpedal 19 and the bell crank 14 to their original positions.

vPivoted to the end of the foot pedal 13 is a rod 21 which is pivoted atits upper end to the bell crank 22, which in turn is pivoted to theclutch shifting rod 23.

From the foregoing it will be seen that the operation of this inventionis as follows:

When in locked position the entire apparatus is as shown in F ig. 1, theclutch tripping device being locked into position by the teeth on thebell crank 14. To unlock the foot lever 13 the operator pushes down withone foot on the foot pedal 19 thereby forcing the teeth of the bellcrank from out of contact with the foot lever 13. With his other footthe operator presses down upon the foot pedal 13, which, being pivotedat 12, forces rod 21 upward and the clutch shifting rod 23 inward,thereby engaging the clutch member 5 and raising and lowering the hammeras described above.

When it is desired to discontinue the operation of the hammer, pressureis removed from the foot pedal 13, the spring 24 thereby causing thefoot pedal 13, the rod 21, bell crank 22 and rod 23 to resume theiroriginal positions thereby disengaging the clutch and stopping thehammer. After the foot pedal 13 resumes its original position pressureis removed from the foot pedal 19, the spring 20 forcing the teeth ofthe bell crank 14, into engagement with the foot pedal 13, therebylocking the same.

Thus it will be seen, that, inasmuch as it requires the use of bothfeet, not simultaneously, but one after the other, the danger of theaccidental dropping of the hammer is minimized.

What I claim is: c y 1. AThe Ycombination of a clutch, avertically/movable foot pedal connected with the clutch and adapted tobe located near a Y floor, a casing adapted to he positioned with itstop flush with the surface of the floor7 a-'lever pivoted in the casingand extending upward through an opening therein to' engage the pedal andhold it in a position With the clutch disengaged, and a foot controlleddevice extending upward through an opening in the casing and servingtoinove the lever to release the pedal.

2.7The combination of a clutch, a Vertically movable foot pedalconnected With the clutch and adapted to be located near a floor,` aCasing adapted to be positioned With Copies of this patent may beobtained for its top flush with the surface of the floor, a bell crankpivotcd in the casing and haring one of its arnis extending upwardthrough an opening therein and provided with notches to engage the pedaland hold it in any of several positions with the clutch disengaged, anda foot controlled device extending upward through an opening` in thecasing and serving to move the hell crank to release the pedal.

In testimony whereof, I ailix in)v signature, in presence of twovwitnesses.

LEONARD AARON PHELPS.

.Vitnesses G. L; AVERY, HERBERT F. CHURCH.

ve cents each, by addressing the Commissioner of Patents. Washington,10.12.

